return seats[x + y * width];
}
-gos_set_temp :: proc (use gos: ^GameOfSeats, x: i32, y: i32, state: SeatState) {
- if x < 0 || y < 0 || x >= width || y >= height do return;
- temp[x + y * width] = state;
-}
-
gos_neighbors :: proc (use gos: ^GameOfSeats, x: i32, y: i32, state := SeatState.Occupied) -> u32 {
count := 0;
switch gos_get_seat(gos, x, y) {
case SeatState.Empty do if occ_neighbors == 0 {
- gos_set_temp(gos, x, y, SeatState.Occupied);
+ temp[x + y * width] = SeatState.Occupied;
changed = true;
}
case SeatState.Occupied do if occ_neighbors >= 5 {
- gos_set_temp(gos, x, y, SeatState.Empty);
+ temp[x + y * width] = SeatState.Empty;
changed = true;
}
}
--- /dev/null
+#include_file "core/std/wasi"
+
+use package core
+use package core.string.reader as reader
+
+Ship :: struct {
+ x : i32 = 0;
+ y : i32 = 0;
+
+ fx : i32 = 1;
+ fy : i32 = 0;
+}
+
+rotate_left :: proc (ship: ^Ship) {
+ ofx := ship.fx;
+ ofy := ship.fy;
+
+ ship.fx = ofy;
+ ship.fy = -ofx;
+}
+
+rotate_right :: proc (ship: ^Ship) {
+ ofx := ship.fx;
+ ofy := ship.fy;
+
+ ship.fx = -ofy;
+ ship.fy = ofx;
+}
+
+turn_around :: proc (ship: ^Ship) {
+ ship.fx = -ship.fx;
+ ship.fy = -ship.fy;
+}
+
+main :: proc (args: [] cstr) {
+ contents := file.get_contents("input/day12.txt");
+ defer cfree(contents.data);
+
+ file := reader.make(contents);
+
+ ship := Ship.{ fx = 10, fy = -1 };
+ while !reader.empty(^file) {
+ dir := reader.read_byte(^file);
+ val := reader.read_u32(^file);
+ reader.advance_line(^file);
+
+ switch dir {
+ case #char "N" do ship.fy -= val;
+ case #char "E" do ship.fx += val;
+ case #char "S" do ship.fy += val;
+ case #char "W" do ship.fx -= val;
+ case #char "F" {
+ ship.x += ship.fx * val;
+ ship.y += ship.fy * val;
+ }
+
+ case #char "L" do switch val {
+ case 90 do rotate_left(^ship);
+ case 180 do turn_around(^ship);
+ case 270 do rotate_right(^ship);
+ }
+
+ case #char "R" do switch val {
+ case 90 do rotate_right(^ship);
+ case 180 do turn_around(^ship);
+ case 270 do rotate_left(^ship);
+ }
+ }
+ }
+
+ printf("Ship distance: %i\n", math.abs(ship.x) + math.abs(ship.y));
+}
projects / onyx-aoc-2020.git / commitdiff